SIR - Has cancer had an impact on your life? If so, Macmillan Cancer Relief needs to hear from you. Have you been diagnosed with cancer? Or perhaps someone close to you has?

If so, you'll have valuable experience and views on the various ways in which cancer can impact on people's lives. This is your opportunity to have your say - and help Macmillan Cancer Relief help even more people cope with cancer, now and in the future.

Macmillan needs to hear from people with cancer, and also close relatives and friends, because we understand that a cancer diagnosis doesn't just affect the individual. Our survey is being conducted by an authorised research organisation so all personal data will be kept confidential and secure. You will not be named in any published research findings, unless you tell us you want to be.

If you are happy to take part in Macmillan's new Impact of Cancer Survey 2006, please visit www.impactofcancer.com now and fill in our online questionnaire. If you prefer the telephone, you can call 020 78613279 to register between the hours of 9-5, Monday to Friday.

PETER CARDY,

Chief Executive

Macmillan Cancer Relief

89 Albert Embankment

London SE1 7UQ